15887202240 has 448 divisors, whose sum is σ = 64233308160. Its totient is φ = 3235921920.

The previous prime is 15887202193. The next prime is 15887202259. The reversal of 15887202240 is 4220278851.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×15887202240² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2530305 + ... + 2536575.

It is an arithmetic number, because the mean of its divisors is an integer number (143377920).

Almost surely, 2^15887202240 is an apocalyptic number.

15887202240 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 15887202240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32116654080).

15887202240 is an abundant number, since it is smaller than the sum of its proper divisors (48346105920).

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

15887202240 is a wasteful number, since it uses less digits than its factorization.

15887202240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6340 (or 6330 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The spelling of 15887202240 in words is "fifteen billion, eight hundred eighty-seven million, two hundred two thousand, two hundred forty".