40629720 has 32 divisors (see below), whose sum is σ = 121889520. Its totient is φ = 10834560.

The previous prime is 40629709. The next prime is 40629739. The reversal of 40629720 is 2792604.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 169171 + ... + 169410.

Almost surely, 2^40629720 is an apocalyptic number.

40629720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40629720 is an abundant number, since it is smaller than the sum of its proper divisors (81259800).

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

40629720 is a wasteful number, since it uses less digits than its factorization.

40629720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338595 (or 338591 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40629720 is about 6374.1446484999. The cubic root of 40629720 is about 343.7805297402.

The spelling of 40629720 in words is "forty million, six hundred twenty-nine thousand, seven hundred twenty".