38435978 has 16 divisors (see below), whose sum is σ = 66971904. Its totient is φ = 16202160.

The previous prime is 38435977. The next prime is 38435981. The reversal of 38435978 is 87953483.

It is not an unprimeable number, because it can be changed into a prime (38435977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21650 + ... + 23357.

It is an arithmetic number, because the mean of its divisors is an integer number (4185744).

Almost surely, 2^38435978 is an apocalyptic number.

38435978 is a deficient number, since it is larger than the sum of its proper divisors (28535926).

38435978 is a wasteful number, since it uses less digits than its factorization.

38435978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45077.

The product of its digits is 725760, while the sum is 47.

The square root of 38435978 is about 6199.6756366765. The cubic root of 38435978 is about 337.4783978858.

The spelling of 38435978 in words is "thirty-eight million, four hundred thirty-five thousand, nine hundred seventy-eight".