38572091 has 4 divisors (see below), whose sum is σ = 39816384. Its totient is φ = 37327800.

The previous prime is 38572063. The next prime is 38572097. The reversal of 38572091 is 19027583.

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

It is a cyclic number.

It is not a de Polignac number, because 38572091 - 2¹⁴ = 38555707 is a prime.

It is a super-2 number, since 2×38572091² = 2975612408224562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38572097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622100 + ... + 622161.

It is an arithmetic number, because the mean of its divisors is an integer number (9954096).

Almost surely, 2^38572091 is an apocalyptic number.

38572091 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

38572091 is a deficient number, since it is larger than the sum of its proper divisors (1244293).

38572091 is a wasteful number, since it uses less digits than its factorization.

38572091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244292.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 38572091 is about 6210.6433644189. The cubic root of 38572091 is about 337.8762983485.

The spelling of 38572091 in words is "thirty-eight million, five hundred seventy-two thousand, ninety-one".