137528646 has 16 divisors (see below), whose sum is σ = 279720000. Its totient is φ = 45065768.

The previous prime is 137528641. The next prime is 137528653. The reversal of 137528646 is 646825731.

It is a junction number, because it is equal to n+sod(n) for n = 137528598 and 137528607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137528641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193896 + ... + 194603.

It is an arithmetic number, because the mean of its divisors is an integer number (17482500).

Almost surely, 2^137528646 is an apocalyptic number.

137528646 is an abundant number, since it is smaller than the sum of its proper divisors (142191354).

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

137528646 is a wasteful number, since it uses less digits than its factorization.

137528646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388563.

The product of its digits is 241920, while the sum is 42.

The square root of 137528646 is about 11727.2608054908. The cubic root of 137528646 is about 516.1758985074.

The spelling of 137528646 in words is "one hundred thirty-seven million, five hundred twenty-eight thousand, six hundred forty-six".