157021458 has 48 divisors (see below), whose sum is σ = 346791648. Its totient is φ = 47361600.

The previous prime is 157021441. The next prime is 157021493. The reversal of 157021458 is 854120751.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 226893 + ... + 227583.

It is an arithmetic number, because the mean of its divisors is an integer number (7224826).

Almost surely, 2^157021458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157021458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173395824).

157021458 is an abundant number, since it is smaller than the sum of its proper divisors (189770190).

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

157021458 is a wasteful number, since it uses less digits than its factorization.

157021458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 157021458 is about 12530.8203243044. The cubic root of 157021458 is about 539.4936474317.

The spelling of 157021458 in words is "one hundred fifty-seven million, twenty-one thousand, four hundred fifty-eight".