38072745 has 12 divisors (see below), whose sum is σ = 65992836. Its totient is φ = 20305440.

The previous prime is 38072731. The next prime is 38072761. The reversal of 38072745 is 54727083.

38072745 is a `hidden beast` number, since 380 + 7 + 274 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27123264 + 10949481 = 5208^2 + 3309^2 .

It is not a de Polignac number, because 38072745 - 2⁴ = 38072729 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 422986 + ... + 423075.

It is an arithmetic number, because the mean of its divisors is an integer number (5499403).

Almost surely, 2^38072745 is an apocalyptic number.

It is an amenable number.

38072745 is a deficient number, since it is larger than the sum of its proper divisors (27920091).

38072745 is a wasteful number, since it uses less digits than its factorization.

38072745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846072 (or 846069 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 38072745 is about 6170.3115804633. The cubic root of 38072745 is about 336.4119362985.

The spelling of 38072745 in words is "thirty-eight million, seventy-two thousand, seven hundred forty-five".