1972404 has 48 divisors (see below), whose sum is σ = 5846400. Its totient is φ = 563328.

The previous prime is 1972381. The next prime is 1972417. The reversal of 1972404 is 4042791.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549 + ... + 2060.

It is an arithmetic number, because the mean of its divisors is an integer number (121800).

2^1972404 is an apocalyptic number.

1972404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1972404 is an abundant number, since it is smaller than the sum of its proper divisors (3873996).

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

1972404 is a wasteful number, since it uses less digits than its factorization.

1972404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629 (or 2621 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1972404 is about 1404.4230131979. The cubic root of 1972404 is about 125.4099394608.

It can be divided in two parts, 197 and 2404, that added together give a square (2601 = 51²).

The spelling of 1972404 in words is "one million, nine hundred seventy-two thousand, four hundred four".