40465730 has 16 divisors (see below), whose sum is σ = 75350520. Its totient is φ = 15628032.

The previous prime is 40465721. The next prime is 40465741. The reversal of 40465730 is 3756404.

It can be written as a sum of positive squares in 4 ways, for example, as 36493681 + 3972049 = 6041^2 + 1993^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 40465693 and 40465702.

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, 69479 + ... + 70058.

Almost surely, 2^40465730 is an apocalyptic number.

40465730 is a deficient number, since it is larger than the sum of its proper divisors (34884790).

40465730 is a wasteful number, since it uses less digits than its factorization.

40465730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139573.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 40465730 is about 6361.2679553686. The cubic root of 40465730 is about 343.3173828222.

The spelling of 40465730 in words is "forty million, four hundred sixty-five thousand, seven hundred thirty".