15404040740 has 48 divisors (see below), whose sum is σ = 36427636224. Its totient is φ = 5420774400.

The previous prime is 15404040733. The next prime is 15404040749. The reversal of 15404040740 is 4704040451.

It is a happy number.

It is a super-2 number, since 2×15404040740² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15404040749) 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, 1122509 + ... + 1136148.

It is an arithmetic number, because the mean of its divisors is an integer number (758909088).

Almost surely, 2^15404040740 is an apocalyptic number.

15404040740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15404040740 is an abundant number, since it is smaller than the sum of its proper divisors (21023595484).

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

15404040740 is a wasteful number, since it uses less digits than its factorization.

15404040740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258708 (or 2258706 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 29.

The spelling of 15404040740 in words is "fifteen billion, four hundred four million, forty thousand, seven hundred forty".