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749898380 = 225711486947
BaseRepresentation
bin101100101100101…
…000101010001100
31221021001210012002
4230230220222030
53013433222010
6202224531432
724404013440
oct5454505214
91837053162
10749898380
11355330830
1218b180b78
13bc49046a
1471846820
1545c7c1a5
hex2cb28a8c

749898380 has 48 divisors (see below), whose sum is σ = 1963374336. Its totient is φ = 233734080.

The previous prime is 749898361. The next prime is 749898421. The reversal of 749898380 is 83898947.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241934 + ... + 245013.

It is an arithmetic number, because the mean of its divisors is an integer number (40903632).

Almost surely, 2749898380 is an apocalyptic number.

749898380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

749898380 is an abundant number, since it is smaller than the sum of its proper divisors (1213475956).

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

749898380 is a wasteful number, since it uses less digits than its factorization.

749898380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486974 (or 486972 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 56.

The square root of 749898380 is about 27384.2724935318. The cubic root of 749898380 is about 908.5192599416.

The spelling of 749898380 in words is "seven hundred forty-nine million, eight hundred ninety-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 1540 486947 973894 1947788 2434735 3408629 4869470 5356417 6817258 9738940 10712834 13634516 17043145 21425668 26782085 34086290 37494919 53564170 68172580 74989838 107128340 149979676 187474595 374949190 749898380