38620040 has 32 divisors (see below), whose sum is σ = 88539480. Its totient is φ = 15155712.

The previous prime is 38620031. The next prime is 38620051. The reversal of 38620040 is 4002683.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29964676 + 8655364 = 5474^2 + 2942^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38619988 and 38620015.

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 7 ways as a sum of consecutive naturals, for example, 6989 + ... + 11228.

Almost surely, 2^38620040 is an apocalyptic number.

It is an amenable number.

38620040 is an abundant number, since it is smaller than the sum of its proper divisors (49919440).

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

38620040 is a wasteful number, since it uses less digits than its factorization.

38620040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18281 (or 18277 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 38620040 is about 6214.5023935952. The cubic root of 38620040 is about 338.0162451490.

The spelling of 38620040 in words is "thirty-eight million, six hundred twenty thousand, forty".