1264720152 has 32 divisors (see below), whose sum is σ = 3164774400. Its totient is φ = 421176864.

The previous prime is 1264720139. The next prime is 1264720181. The reversal of 1264720152 is 2510274621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1849 + ... + 50327.

It is an arithmetic number, because the mean of its divisors is an integer number (98899200).

Almost surely, 2^1264720152 is an apocalyptic number.

1264720152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1264720152 is an abundant number, since it is smaller than the sum of its proper divisors (1900054248).

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

1264720152 is a wasteful number, since it uses less digits than its factorization.

1264720152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49575 (or 49571 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 1264720152 is about 35562.9041558757. The cubic root of 1264720152 is about 1081.4293352088.

Adding to 1264720152 its reverse (2510274621), we get a palindrome (3774994773).

The spelling of 1264720152 in words is "one billion, two hundred sixty-four million, seven hundred twenty thousand, one hundred fifty-two".