134644520 has 64 divisors (see below), whose sum is σ = 309251520. Its totient is φ = 52752384.

The previous prime is 134644513. The next prime is 134644529. The reversal of 134644520 is 25446431.

It is not an unprimeable number, because it can be changed into a prime (134644529) 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, 697544 + ... + 697736.

It is an arithmetic number, because the mean of its divisors is an integer number (4832055).

Almost surely, 2^134644520 is an apocalyptic number.

134644520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134644520 is an abundant number, since it is smaller than the sum of its proper divisors (174607000).

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

134644520 is a wasteful number, since it uses less digits than its factorization.

134644520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 134644520 is about 11603.6425315502. The cubic root of 134644520 is about 512.5421198776.

The spelling of 134644520 in words is "one hundred thirty-four million, six hundred forty-four thousand, five hundred twenty".