16240978 has 16 divisors (see below), whose sum is σ = 26570880. Its totient is φ = 7400016.

The previous prime is 16240969. The next prime is 16240979. The reversal of 16240978 is 87904261.

It is not an unprimeable number, because it can be changed into a prime (16240979) 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, 1900 + ... + 6007.

It is an arithmetic number, because the mean of its divisors is an integer number (1660680).

Almost surely, 2^16240978 is an apocalyptic number.

16240978 is a deficient number, since it is larger than the sum of its proper divisors (10329902).

16240978 is a wasteful number, since it uses less digits than its factorization.

16240978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 16240978 is about 4030.0096774077. The cubic root of 16240978 is about 253.2429667689.

The spelling of 16240978 in words is "sixteen million, two hundred forty thousand, nine hundred seventy-eight".