15428561040 has 120 divisors (see below), whose sum is σ = 51919296000. Its totient is φ = 4105942272.

The previous prime is 15428561033. The next prime is 15428561119. The reversal of 15428561040 is 4016582451.

It is a happy number.

15428561040 is a `hidden beast` number, since 1 + 54 + 2 + 8 + 561 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15428560986 and 15428561004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 337809 + ... + 380751.

It is an arithmetic number, because the mean of its divisors is an integer number (432660800).

Almost surely, 2^15428561040 is an apocalyptic number.

15428561040 is a gapful number since it is divisible by the number (10) 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 15428561040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25959648000).

15428561040 is an abundant number, since it is smaller than the sum of its proper divisors (36490734960).

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

15428561040 is a wasteful number, since it uses less digits than its factorization.

15428561040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43461 (or 43452 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 15428561040 in words is "fifteen billion, four hundred twenty-eight million, five hundred sixty-one thousand, forty".