338428890 has 48 divisors (see below), whose sum is σ = 891072000. Its totient is φ = 89103456.

The previous prime is 338428879. The next prime is 338428919. The reversal of 338428890 is 98824833.

It is a super-2 number, since 2×338428890² = 229068227173264200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16690 + ... + 30909.

It is an arithmetic number, because the mean of its divisors is an integer number (18564000).

Almost surely, 2^338428890 is an apocalyptic number.

338428890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

338428890 is an abundant number, since it is smaller than the sum of its proper divisors (552643110).

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

338428890 is a wasteful number, since it uses less digits than its factorization.

338428890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47691 (or 47688 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 338428890 is about 18396.4368832663. The cubic root of 338428890 is about 696.8764844492.

The spelling of 338428890 in words is "three hundred thirty-eight million, four hundred twenty-eight thousand, eight hundred ninety".