156728234880 has 896 divisors, whose sum is σ = 659872255680. Its totient is φ = 34828517376.

The previous prime is 156728234813. The next prime is 156728234891. The reversal of 156728234880 is 88432827651.

156728234880 is a `hidden beast` number, since 15 + 6 + 7 + 282 + 348 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (896).

It is a super-2 number, since 2×156728234880² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 120838392 + ... + 120839688.

Almost surely, 2^156728234880 is an apocalyptic number.

156728234880 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 156728234880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329936127840).

156728234880 is an abundant number, since it is smaller than the sum of its proper divisors (503144020800).

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

156728234880 is an equidigital number, since it uses as much as digits as its factorization.

156728234880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 156728234880 in words is "one hundred fifty-six billion, seven hundred twenty-eight million, two hundred thirty-four thousand, eight hundred eighty".