40797720 has 48 divisors (see below), whose sum is σ = 132593760. Its totient is φ = 10879296.

The previous prime is 40797697. The next prime is 40797749. The reversal of 40797720 is 2779704.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56304 + ... + 57023.

It is an arithmetic number, because the mean of its divisors is an integer number (2762370).

Almost surely, 2^40797720 is an apocalyptic number.

40797720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40797720 is an abundant number, since it is smaller than the sum of its proper divisors (91796040).

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

40797720 is a wasteful number, since it uses less digits than its factorization.

40797720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113344 (or 113337 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 40797720 is about 6387.3092926521. The cubic root of 40797720 is about 344.2537113372.

The spelling of 40797720 in words is "forty million, seven hundred ninety-seven thousand, seven hundred twenty".