38225840 has 20 divisors (see below), whose sum is σ = 88875264. Its totient is φ = 15290304.

The previous prime is 38225827. The next prime is 38225851. The reversal of 38225840 is 4852283.

38225840 is nontrivially palindromic in base 3.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×38225840² = 2922429687411200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38225797 and 38225806.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238832 + ... + 238991.

Almost surely, 2^38225840 is an apocalyptic number.

It is an amenable number.

38225840 is an abundant number, since it is smaller than the sum of its proper divisors (50649424).

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

38225840 is a wasteful number, since it uses less digits than its factorization.

38225840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477836 (or 477830 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 38225840 is about 6182.7049096653. The cubic root of 38225840 is about 336.8622506112.

The spelling of 38225840 in words is "thirty-eight million, two hundred twenty-five thousand, eight hundred forty".