16220398 has 16 divisors (see below), whose sum is σ = 25006320. Its totient is φ = 7888000.

The previous prime is 16220383. The next prime is 16220401. The reversal of 16220398 is 89302261.

It is a super-2 number, since 2×16220398² = 526202622556808, which contains 22 as substring.

It is a congruent number.

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, 11238 + ... + 12598.

It is an arithmetic number, because the mean of its divisors is an integer number (1562895).

Almost surely, 2^16220398 is an apocalyptic number.

16220398 is a deficient number, since it is larger than the sum of its proper divisors (8785922).

16220398 is a wasteful number, since it uses less digits than its factorization.

16220398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 16220398 is about 4027.4555242734. The cubic root of 16220398 is about 253.1359546750.

The spelling of 16220398 in words is "sixteen million, two hundred twenty thousand, three hundred ninety-eight".