401864370 has 64 divisors (see below), whose sum is σ = 999371520. Its totient is φ = 103347200.

The previous prime is 401864357. The next prime is 401864371. The reversal of 401864370 is 73468104.

It is a super-2 number, since 2×401864370² = 322989943750993800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401864371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107635 + ... + 111305.

It is an arithmetic number, because the mean of its divisors is an integer number (15615180).

Almost surely, 2^401864370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401864370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499685760).

401864370 is an abundant number, since it is smaller than the sum of its proper divisors (597507150).

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

401864370 is a wasteful number, since it uses less digits than its factorization.

401864370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 401864370 is about 20046.5550656466. Note that the first 3 decimals coincide. The cubic root of 401864370 is about 737.9492587818.

The spelling of 401864370 in words is "four hundred one million, eight hundred sixty-four thousand, three hundred seventy".