14607978 has 48 divisors (see below), whose sum is σ = 37083744. Its totient is φ = 3793440.

The previous prime is 14607973. The next prime is 14607997. The reversal of 14607978 is 87970641.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (14607973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 976 + ... + 5492.

It is an arithmetic number, because the mean of its divisors is an integer number (772578).

Almost surely, 2^14607978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14607978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18541872).

14607978 is an abundant number, since it is smaller than the sum of its proper divisors (22475766).

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

14607978 is a wasteful number, since it uses less digits than its factorization.

14607978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547 (or 4540 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 14607978 is about 3822.0384613449. The cubic root of 14607978 is about 244.4537489724.

The spelling of 14607978 in words is "fourteen million, six hundred seven thousand, nine hundred seventy-eight".