2371404 has 72 divisors (see below), whose sum is σ = 6671280. Its totient is φ = 653184.

The previous prime is 2371361. The next prime is 2371423. The reversal of 2371404 is 4041732.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21702 + ... + 21810.

2^2371404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2371404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3335640).

2371404 is an abundant number, since it is smaller than the sum of its proper divisors (4299876).

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

2371404 is a wasteful number, since it uses less digits than its factorization.

2371404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 2371404 is about 1539.9363623215. The cubic root of 2371404 is about 133.3527110725.

Subtracting from 2371404 its product of nonzero digits (672), we obtain a palindrome (2370732).

It can be divided in two parts, 2371 and 404, that added together give a triangular number (2775 = T₇₄).

The spelling of 2371404 in words is "two million, three hundred seventy-one thousand, four hundred four".