46309640 has 32 divisors (see below), whose sum is σ = 112213080. Its totient is φ = 17098752.

The previous prime is 46309639. The next prime is 46309673. The reversal of 46309640 is 4690364.

It can be written as a sum of positive squares in 4 ways, for example, as 18028516 + 28281124 = 4246^2 + 5318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 46309597 and 46309606.

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, 44009 + ... + 45048.

Almost surely, 2^46309640 is an apocalyptic number.

46309640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

46309640 is an abundant number, since it is smaller than the sum of its proper divisors (65903440).

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

46309640 is a wasteful number, since it uses less digits than its factorization.

46309640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89081 (or 89077 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 46309640 is about 6805.1186617134. The cubic root of 46309640 is about 359.1069427906.

The spelling of 46309640 in words is "forty-six million, three hundred nine thousand, six hundred forty".