401351020 has 24 divisors (see below), whose sum is σ = 963242784. Its totient is φ = 137606016.

The previous prime is 401350993. The next prime is 401351023. The reversal of 401351020 is 20153104.

It is a super-2 number, since 2×401351020² = 322165282510080800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401350985 and 401351003.

It is not an unprimeable number, because it can be changed into a prime (401351023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433257 + ... + 1433536.

It is an arithmetic number, because the mean of its divisors is an integer number (40135116).

Almost surely, 2^401351020 is an apocalyptic number.

It is an amenable number.

401351020 is an abundant number, since it is smaller than the sum of its proper divisors (561891764).

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

401351020 is a wasteful number, since it uses less digits than its factorization.

401351020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866809 (or 2866807 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 401351020 is about 20033.7470284518. The cubic root of 401351020 is about 737.6349009190.

The spelling of 401351020 in words is "four hundred one million, three hundred fifty-one thousand, twenty".