38405224 has 64 divisors (see below), whose sum is σ = 86184000. Its totient is φ = 15813120.

The previous prime is 38405203. The next prime is 38405243. The reversal of 38405224 is 42250483.

It is a super-2 number, since 2×38405224² = 2949922460980352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38405192 and 38405201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67212 + ... + 67780.

It is an arithmetic number, because the mean of its divisors is an integer number (1346625).

Almost surely, 2^38405224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38405224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43092000).

38405224 is an abundant number, since it is smaller than the sum of its proper divisors (47778776).

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

38405224 is a wasteful number, since it uses less digits than its factorization.

38405224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 38405224 is about 6197.1948492846. The cubic root of 38405224 is about 337.3883643584.

The spelling of 38405224 in words is "thirty-eight million, four hundred five thousand, two hundred twenty-four".