16097978 has 16 divisors (see below), whose sum is σ = 27373920. Its totient is φ = 7038576.

The previous prime is 16097971. The next prime is 16098001. The reversal of 16097978 is 87979061.

It is not an unprimeable number, because it can be changed into a prime (16097971) 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, 15800 + ... + 16787.

It is an arithmetic number, because the mean of its divisors is an integer number (1710870).

Almost surely, 2^16097978 is an apocalyptic number.

16097978 is a deficient number, since it is larger than the sum of its proper divisors (11275942).

16097978 is a wasteful number, since it uses less digits than its factorization.

16097978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32621.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 16097978 is about 4012.2285577968. The cubic root of 16097978 is about 252.4975159054.

The spelling of 16097978 in words is "sixteen million, ninety-seven thousand, nine hundred seventy-eight".