40477720 has 16 divisors (see below), whose sum is σ = 91074960. Its totient is φ = 16191072.

The previous prime is 40477711. The next prime is 40477721. The reversal of 40477720 is 2777404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40477721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505932 + ... + 506011.

It is an arithmetic number, because the mean of its divisors is an integer number (5692185).

Almost surely, 2^40477720 is an apocalyptic number.

40477720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40477720 is an abundant number, since it is smaller than the sum of its proper divisors (50597240).

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

40477720 is a wasteful number, since it uses less digits than its factorization.

40477720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011954 (or 1011950 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 40477720 is about 6362.2103077468. The cubic root of 40477720 is about 343.3512877991.

The spelling of 40477720 in words is "forty million, four hundred seventy-seven thousand, seven hundred twenty".