38245440 has 56 divisors (see below), whose sum is σ = 121432320. Its totient is φ = 10198528.

The previous prime is 38245429. The next prime is 38245477. The reversal of 38245440 is 4454283.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 38245398 and 38245407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18960 + ... + 20879.

Almost surely, 2^38245440 is an apocalyptic number.

38245440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38245440 is an abundant number, since it is smaller than the sum of its proper divisors (83186880).

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

38245440 is a wasteful number, since it uses less digits than its factorization.

38245440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39859 (or 39849 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 38245440 is about 6184.2897732884. The cubic root of 38245440 is about 336.9198152671.

The spelling of 38245440 in words is "thirty-eight million, two hundred forty-five thousand, four hundred forty".