38729402 has 8 divisors (see below), whose sum is σ = 58122036. Its totient is φ = 19355392.

The previous prime is 38729389. The next prime is 38729407. The reversal of 38729402 is 20492783.

It can be written as a sum of positive squares in 2 ways, for example, as 38700841 + 28561 = 6221^2 + 169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (38729407) 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, 3188 + ... + 9360.

Almost surely, 2^38729402 is an apocalyptic number.

38729402 is a deficient number, since it is larger than the sum of its proper divisors (19392634).

38729402 is a wasteful number, since it uses less digits than its factorization.

38729402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9312.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 38729402 is about 6223.2951078990. The cubic root of 38729402 is about 338.3350027555.

The spelling of 38729402 in words is "thirty-eight million, seven hundred twenty-nine thousand, four hundred two".