38721154 has 4 divisors (see below), whose sum is σ = 58081734. Its totient is φ = 19360576.

The previous prime is 38721131. The next prime is 38721161. The reversal of 38721154 is 45112783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 34539129 + 4182025 = 5877^2 + 2045^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9680287 + ... + 9680290.

Almost surely, 2^38721154 is an apocalyptic number.

38721154 is a deficient number, since it is larger than the sum of its proper divisors (19360580).

38721154 is a wasteful number, since it uses less digits than its factorization.

38721154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19360579.

The product of its digits is 6720, while the sum is 31.

The square root of 38721154 is about 6222.6324011627. The cubic root of 38721154 is about 338.3109832330.

The spelling of 38721154 in words is "thirty-eight million, seven hundred twenty-one thousand, one hundred fifty-four".