40797738 has 24 divisors (see below), whose sum is σ = 89274276. Its totient is φ = 13464000.

The previous prime is 40797697. The next prime is 40797749. The reversal of 40797738 is 83779704.

It can be written as a sum of positive squares in 2 ways, for example, as 40793769 + 3969 = 6387^2 + 63^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40797693 and 40797702.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9403 + ... + 13038.

Almost surely, 2^40797738 is an apocalyptic number.

40797738 is an abundant number, since it is smaller than the sum of its proper divisors (48476538).

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

40797738 is a wasteful number, since it uses less digits than its factorization.

40797738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22550 (or 22547 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 40797738 is about 6387.3107016960. The cubic root of 40797738 is about 344.2537619656.

The spelling of 40797738 in words is "forty million, seven hundred ninety-seven thousand, seven hundred thirty-eight".