38280040 has 32 divisors (see below), whose sum is σ = 88911360. Its totient is φ = 14817600.

The previous prime is 38280023. The next prime is 38280049. The reversal of 38280040 is 4008283.

It is a super-2 number, since 2×38280040² = 2930722924803200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38279987 and 38280014.

It is not an unprimeable number, because it can be changed into a prime (38280049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14196 + ... + 16675.

It is an arithmetic number, because the mean of its divisors is an integer number (2778480).

Almost surely, 2^38280040 is an apocalyptic number.

It is an amenable number.

38280040 is an abundant number, since it is smaller than the sum of its proper divisors (50631320).

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

38280040 is a wasteful number, since it uses less digits than its factorization.

38280040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30913 (or 30909 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 38280040 is about 6187.0865518433. The cubic root of 38280040 is about 337.0213865215.

The spelling of 38280040 in words is "thirty-eight million, two hundred eighty thousand, forty".