157621408 has 48 divisors (see below), whose sum is σ = 358210944. Its totient is φ = 66873600.

The previous prime is 157621367. The next prime is 157621439. The reversal of 157621408 is 804126751.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19141 + ... + 26107.

It is an arithmetic number, because the mean of its divisors is an integer number (7462728).

Almost surely, 2^157621408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157621408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179105472).

157621408 is an abundant number, since it is smaller than the sum of its proper divisors (200589536).

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

157621408 is a wasteful number, since it uses less digits than its factorization.

157621408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085 (or 7077 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 157621408 is about 12554.7364767246. The cubic root of 157621408 is about 540.1798760613.

The spelling of 157621408 in words is "one hundred fifty-seven million, six hundred twenty-one thousand, four hundred eight".