404156032 has 128 divisors (see below), whose sum is σ = 963728640. Its totient is φ = 165224448.

The previous prime is 404156003. The next prime is 404156047. The reversal of 404156032 is 230651404.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 404155988 and 404156006.

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, 2420013 + ... + 2420179.

It is an arithmetic number, because the mean of its divisors is an integer number (7529130).

Almost surely, 2^404156032 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 404156032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481864320).

404156032 is an abundant number, since it is smaller than the sum of its proper divisors (559572608).

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

404156032 is a wasteful number, since it uses less digits than its factorization.

404156032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 404156032 is about 20103.6323086153. The cubic root of 404156032 is about 739.3493379680.

The spelling of 404156032 in words is "four hundred four million, one hundred fifty-six thousand, thirty-two".