10621404 has 18 divisors (see below), whose sum is σ = 26848640. Its totient is φ = 3540456.

The previous prime is 10621397. The next prime is 10621411. The reversal of 10621404 is 40412601.

10621404 is a `hidden beast` number, since 1 + 0 + 621 + 40 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (10621397) and next prime (10621411).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×10621404² = 225628445862432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147484 + ... + 147555.

Almost surely, 2^10621404 is an apocalyptic number.

It is an amenable number.

10621404 is an abundant number, since it is smaller than the sum of its proper divisors (16227236).

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

10621404 is a wasteful number, since it uses less digits than its factorization.

10621404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295049 (or 295044 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 10621404 is about 3259.0495547015. The cubic root of 10621404 is about 219.8166792415.

It can be divided in two parts, 10621 and 404, that added together give a square (11025 = 105²).

The spelling of 10621404 in words is "ten million, six hundred twenty-one thousand, four hundred four".