38229490 has 24 divisors (see below), whose sum is σ = 74516868. Its totient is φ = 14114880.

The previous prime is 38229487. The next prime is 38229491. The reversal of 38229490 is 9492283.

It is a Cunningham number, because it is equal to 6183²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 13756681 + 24472809 = 3709^2 + 4947^2 .

It is a super-2 number, since 2×38229490² = 2922987811320200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38229491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9621 + ... + 13000.

Almost surely, 2^38229490 is an apocalyptic number.

38229490 is a deficient number, since it is larger than the sum of its proper divisors (36287378).

38229490 is a wasteful number, since it uses less digits than its factorization.

38229490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22654 (or 22641 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 38229490 is about 6183.0000808669. Note that the first 4 decimals coincide. The cubic root of 38229490 is about 336.8729720506.

The spelling of 38229490 in words is "thirty-eight million, two hundred twenty-nine thousand, four hundred ninety".