157226440 has 64 divisors (see below), whose sum is σ = 406684800. Its totient is φ = 53587968.

The previous prime is 157226423. The next prime is 157226441. The reversal of 157226440 is 44622751.

157226440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (157226441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48552 + ... + 51688.

It is an arithmetic number, because the mean of its divisors is an integer number (6354450).

Almost surely, 2^157226440 is an apocalyptic number.

157226440 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 157226440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203342400).

157226440 is an abundant number, since it is smaller than the sum of its proper divisors (249458360).

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

157226440 is a wasteful number, since it uses less digits than its factorization.

157226440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334 (or 3330 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 157226440 is about 12538.9967700769. The cubic root of 157226440 is about 539.7283041082.

The spelling of 157226440 in words is "one hundred fifty-seven million, two hundred twenty-six thousand, four hundred forty".