401485240 has 64 divisors (see below), whose sum is σ = 1015156800. Its totient is φ = 141791232.

The previous prime is 401485223. The next prime is 401485283. The reversal of 401485240 is 42584104.

It is a super-2 number, since 2×401485240² = 322380795875715200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401485199 and 401485208.

It is a congruent number.

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, 4825 + ... + 28744.

It is an arithmetic number, because the mean of its divisors is an integer number (15861825).

Almost surely, 2^401485240 is an apocalyptic number.

401485240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401485240 is an abundant number, since it is smaller than the sum of its proper divisors (613671560).

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

401485240 is a wasteful number, since it uses less digits than its factorization.

401485240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33616 (or 33612 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 401485240 is about 20037.0965960640. The cubic root of 401485240 is about 737.7171184933.

The spelling of 401485240 in words is "four hundred one million, four hundred eighty-five thousand, two hundred forty".