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67425740 = 22517613251
BaseRepresentation
bin1000000010011…
…01010111001100
311200212120201122
410001031113030
5114230110430
610405100112
71446052334
oct401152714
9150776648
1067425740
1135072a58
121a6b7638
1310c79bb5
148d520c4
155dbcee5
hex404d5cc

67425740 has 48 divisors (see below), whose sum is σ = 152427744. Its totient is φ = 24960000.

The previous prime is 67425739. The next prime is 67425769. The reversal of 67425740 is 4752476.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 67425740.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19115 + ... + 22365.

It is an arithmetic number, because the mean of its divisors is an integer number (3175578).

Almost surely, 267425740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67425740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76213872).

67425740 is an abundant number, since it is smaller than the sum of its proper divisors (85002004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67425740 is a wasteful number, since it uses less digits than its factorization.

67425740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338 (or 3336 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 67425740 is about 8211.3177992330. The cubic root of 67425740 is about 407.0132746245.

The spelling of 67425740 in words is "sixty-seven million, four hundred twenty-five thousand, seven hundred forty".

Divisors: 1 2 4 5 10 17 20 34 61 68 85 122 170 244 305 340 610 1037 1220 2074 3251 4148 5185 6502 10370 13004 16255 20740 32510 55267 65020 110534 198311 221068 276335 396622 552670 793244 991555 1105340 1983110 3371287 3966220 6742574 13485148 16856435 33712870 67425740