18806970 has 96 divisors (see below), whose sum is σ = 56230272. Its totient is φ = 3920256.

The previous prime is 18806951. The next prime is 18807001. The reversal of 18806970 is 7960881.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226549 + ... + 226631.

It is an arithmetic number, because the mean of its divisors is an integer number (585732).

Almost surely, 2^18806970 is an apocalyptic number.

18806970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18806970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28115136).

18806970 is an abundant number, since it is smaller than the sum of its proper divisors (37423302).

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

18806970 is a wasteful number, since it uses less digits than its factorization.

18806970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 18806970 is about 4336.7003585676. The cubic root of 18806970 is about 265.9334353953.

The spelling of 18806970 in words is "eighteen million, eight hundred six thousand, nine hundred seventy".