7481404 has 12 divisors (see below), whose sum is σ = 14962864. Its totient is φ = 3206304.

The previous prime is 7481401. The next prime is 7481407. The reversal of 7481404 is 4041847.

It is an interprime number because it is at equal distance from previous prime (7481401) and next prime (7481407).

7481404 is an admirable number.

It is a super-2 number, since 2×7481404² = 111942811622432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 267193 = 7481404 / (7 + 4 + 8 + 1 + 4 + 0 + 4).

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7481401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133569 + ... + 133624.

Almost surely, 2^7481404 is an apocalyptic number.

It is an amenable number.

7481404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7481404 is a wasteful number, since it uses less digits than its factorization.

7481404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267204 (or 267202 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 7481404 is about 2735.2155308129. The cubic root of 7481404 is about 195.5814684345.

The spelling of 7481404 in words is "seven million, four hundred eighty-one thousand, four hundred four".