11625978 has 64 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 3022272.

The previous prime is 11625931. The next prime is 11625983. The reversal of 11625978 is 87952611.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58323 + ... + 58521.

It is an arithmetic number, because the mean of its divisors is an integer number (453600).

Almost surely, 2^11625978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11625978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14515200).

11625978 is an abundant number, since it is smaller than the sum of its proper divisors (17404422).

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

11625978 is a wasteful number, since it uses less digits than its factorization.

11625978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331.

The product of its digits is 30240, while the sum is 39.

The square root of 11625978 is about 3409.6888421086. The cubic root of 11625978 is about 226.5390972862.

It can be divided in two parts, 1162 and 5978, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 11625978 in words is "eleven million, six hundred twenty-five thousand, nine hundred seventy-eight".