40730868 has 18 divisors (see below), whose sum is σ = 102958674. Its totient is φ = 13576944.

The previous prime is 40730863. The next prime is 40730873. The reversal of 40730868 is 86803704.

It is an interprime number because it is at equal distance from previous prime (40730863) and next prime (40730873).

It can be written as a sum of positive squares in only one way, i.e., 40678884 + 51984 = 6378^2 + 228^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1131413 = 40730868 / (4 + 0 + 7 + 3 + 0 + 8 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40730863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 565671 + ... + 565742.

Almost surely, 2^40730868 is an apocalyptic number.

It is an amenable number.

40730868 is an abundant number, since it is smaller than the sum of its proper divisors (62227806).

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

40730868 is a wasteful number, since it uses less digits than its factorization.

40730868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131423 (or 1131418 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 40730868 is about 6382.0739575784. The cubic root of 40730868 is about 344.0655747534.

The spelling of 40730868 in words is "forty million, seven hundred thirty thousand, eight hundred sixty-eight".