401798784 has 32 divisors (see below), whose sum is σ = 1067279040. Its totient is φ = 133932800.

The previous prime is 401798773. The next prime is 401798807. The reversal of 401798784 is 487897104.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×401798784² = 322884525647757312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522792 + ... + 523559.

It is an arithmetic number, because the mean of its divisors is an integer number (33352470).

Almost surely, 2^401798784 is an apocalyptic number.

It is an amenable number.

401798784 is an abundant number, since it is smaller than the sum of its proper divisors (665480256).

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

401798784 is a wasteful number, since it uses less digits than its factorization.

401798784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046368 (or 1046356 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 401798784 is about 20044.9191567340. The cubic root of 401798784 is about 737.9091110960.

The spelling of 401798784 in words is "four hundred one million, seven hundred ninety-eight thousand, seven hundred eighty-four".