38403634 has 16 divisors (see below), whose sum is σ = 59607576. Its totient is φ = 18544000.

The previous prime is 38403623. The next prime is 38403647. The reversal of 38403634 is 43630483.

It can be written as a sum of positive squares in 4 ways, for example, as 29192409 + 9211225 = 5403^2 + 3035^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38403596 and 38403605.

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, 5964 + ... + 10600.

Almost surely, 2^38403634 is an apocalyptic number.

38403634 is a deficient number, since it is larger than the sum of its proper divisors (21203942).

38403634 is a wasteful number, since it uses less digits than its factorization.

38403634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 38403634 is about 6197.0665641092. The cubic root of 38403634 is about 337.3837082652.

The spelling of 38403634 in words is "thirty-eight million, four hundred three thousand, six hundred thirty-four".