157440000 has 240 divisors, whose sum is σ = 537296760. Its totient is φ = 40960000.

The previous prime is 157439981. The next prime is 157440029. The reversal of 157440000 is 44751.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3839980 + ... + 3840020.

Almost surely, 2^157440000 is an apocalyptic number.

157440000 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 157440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268648380).

157440000 is an abundant number, since it is smaller than the sum of its proper divisors (379856760).

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

157440000 is an frugal number, since it uses more digits than its factorization.

157440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 157440000 is about 12547.5097130865. The cubic root of 157440000 is about 539.9725637638.

Adding to 157440000 its reverse (44751), we get a palindrome (157484751).

The spelling of 157440000 in words is "one hundred fifty-seven million, four hundred forty thousand".