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408080040 = 233533710091
BaseRepresentation
bin11000010100101…
…100111010101000
31001102212121120120
4120110230322220
51313432030130
6104254323240
713053423504
oct3024547250
91042777516
10408080040
1119a394635
12b47b9520
13667102a4
143c2a9304
1525c5c910
hex1852cea8

408080040 has 64 divisors (see below), whose sum is σ = 1227994560. Its totient is φ = 108487680.

The previous prime is 408080039. The next prime is 408080047. The reversal of 408080040 is 40080804.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (408080047) by changing a digit.

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, 35395 + ... + 45485.

It is an arithmetic number, because the mean of its divisors is an integer number (19187415).

Almost surely, 2408080040 is an apocalyptic number.

408080040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 408080040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613997280).

408080040 is an abundant number, since it is smaller than the sum of its proper divisors (819914520).

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

408080040 is a wasteful number, since it uses less digits than its factorization.

408080040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10442 (or 10438 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 408080040 is about 20200.9910647968. The cubic root of 408080040 is about 741.7344511263.

The spelling of 408080040 in words is "four hundred eight million, eighty thousand, forty".