10155978 has 24 divisors (see below), whose sum is σ = 25148448. Its totient is φ = 2901672.

The previous prime is 10155973. The next prime is 10155983. The reversal of 10155978 is 87955101.

It is an interprime number because it is at equal distance from previous prime (10155973) and next prime (10155983).

It is not an unprimeable number, because it can be changed into a prime (10155973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40176 + ... + 40427.

It is an arithmetic number, because the mean of its divisors is an integer number (1047852).

Almost surely, 2^10155978 is an apocalyptic number.

10155978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10155978 is an abundant number, since it is smaller than the sum of its proper divisors (14992470).

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

10155978 is a wasteful number, since it uses less digits than its factorization.

10155978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80618 (or 80615 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The square root of 10155978 is about 3186.8445208388. The cubic root of 10155978 is about 216.5578430500.

The spelling of 10155978 in words is "ten million, one hundred fifty-five thousand, nine hundred seventy-eight".