157890546 has 80 divisors (see below), whose sum is σ = 388590048. Its totient is φ = 47520000.

The previous prime is 157890521. The next prime is 157890547. The reversal of 157890546 is 645098751.

157890546 is a `hidden beast` number, since 15 + 7 + 8 + 90 + 546 = 666.

It is not an unprimeable number, because it can be changed into a prime (157890547) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 447106 + ... + 447458.

Almost surely, 2^157890546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157890546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194295024).

157890546 is an abundant number, since it is smaller than the sum of its proper divisors (230699502).

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

157890546 is a wasteful number, since it uses less digits than its factorization.

157890546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 157890546 is about 12565.4504893378. The cubic root of 157890546 is about 540.4871529826.

The spelling of 157890546 in words is "one hundred fifty-seven million, eight hundred ninety thousand, five hundred forty-six".