264157020 has 36 divisors (see below), whose sum is σ = 801276840. Its totient is φ = 70441824.

The previous prime is 264157013. The next prime is 264157021. The reversal of 264157020 is 20751462.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264157021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 733590 + ... + 733949.

It is an arithmetic number, because the mean of its divisors is an integer number (22257690).

Almost surely, 2^264157020 is an apocalyptic number.

264157020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264157020 is an abundant number, since it is smaller than the sum of its proper divisors (537119820).

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

264157020 is a wasteful number, since it uses less digits than its factorization.

264157020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467554 (or 1467549 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 264157020 is about 16252.9080474849. The cubic root of 264157020 is about 641.6340243885.

The spelling of 264157020 in words is "two hundred sixty-four million, one hundred fifty-seven thousand, twenty".