137440746 has 32 divisors (see below), whose sum is σ = 307771200. Its totient is φ = 45461520.

The previous prime is 137440741. The next prime is 137440757. The reversal of 137440746 is 647044731.

It is a happy number.

It is a super-2 number, since 2×137440746² = 37779917322073032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 137440746.

It is not an unprimeable number, because it can be changed into a prime (137440741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2641 + ... + 16788.

It is an arithmetic number, because the mean of its divisors is an integer number (9617850).

Almost surely, 2^137440746 is an apocalyptic number.

137440746 is an abundant number, since it is smaller than the sum of its proper divisors (170330454).

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

137440746 is a wasteful number, since it uses less digits than its factorization.

137440746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19571 (or 19565 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 137440746 is about 11723.5125282485. The cubic root of 137440746 is about 516.0659055895.

The spelling of 137440746 in words is "one hundred thirty-seven million, four hundred forty thousand, seven hundred forty-six".