38572740 has 96 divisors (see below), whose sum is σ = 122075520. Its totient is φ = 10108800.

The previous prime is 38572739. The next prime is 38572747. The reversal of 38572740 is 4727583.

38572740 is a `hidden beast` number, since 385 + 7 + 274 + 0 = 666.

It is a super-2 number, since 2×38572740² = 2975712542215200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 38572695 and 38572704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38572747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32355 + ... + 33525.

It is an arithmetic number, because the mean of its divisors is an integer number (1271620).

Almost surely, 2^38572740 is an apocalyptic number.

38572740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38572740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61037760).

38572740 is an abundant number, since it is smaller than the sum of its proper divisors (83502780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38572740 is a wasteful number, since it uses less digits than its factorization.

38572740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250 (or 1242 counting only the distinct ones).

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

The square root of 38572740 is about 6210.6956132144. The cubic root of 38572740 is about 337.8781933325.

The spelling of 38572740 in words is "thirty-eight million, five hundred seventy-two thousand, seven hundred forty".