16251998 has 16 divisors (see below), whose sum is σ = 28760064. Its totient is φ = 6740280.

The previous prime is 16251997. The next prime is 16252003. The reversal of 16251998 is 89915261.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16251997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18290 + ... + 19157.

It is an arithmetic number, because the mean of its divisors is an integer number (1797504).

Almost surely, 2^16251998 is an apocalyptic number.

16251998 is a deficient number, since it is larger than the sum of its proper divisors (12508066).

16251998 is a wasteful number, since it uses less digits than its factorization.

16251998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37487.

The product of its digits is 38880, while the sum is 41.

The square root of 16251998 is about 4031.3766879318. The cubic root of 16251998 is about 253.3002315167.

The spelling of 16251998 in words is "sixteen million, two hundred fifty-one thousand, nine hundred ninety-eight".