404251488 has 36 divisors (see below), whose sum is σ = 1149590988. Its totient is φ = 134750400.

The previous prime is 404251481. The next prime is 404251499. The reversal of 404251488 is 884152404.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404251481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 701538 + ... + 702113.

It is an arithmetic number, because the mean of its divisors is an integer number (31933083).

Almost surely, 2^404251488 is an apocalyptic number.

404251488 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

404251488 is an abundant number, since it is smaller than the sum of its proper divisors (745339500).

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

404251488 is a wasteful number, since it uses less digits than its factorization.

404251488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403667 (or 1403656 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 404251488 is about 20106.0062667851. The cubic root of 404251488 is about 739.4075413757.

It can be divided in two parts, 40 and 4251488, that added together give a cube (4251528 = 162³).

The spelling of 404251488 in words is "four hundred four million, two hundred fifty-one thousand, four hundred eighty-eight".