401262740 has 12 divisors (see below), whose sum is σ = 842651796. Its totient is φ = 160505088.

The previous prime is 401262737. The next prime is 401262803. The reversal of 401262740 is 47262104.

It can be written as a sum of positive squares in 2 ways, for example, as 308564356 + 92698384 = 17566^2 + 9628^2 .

It is a super-2 number, since 2×401262740² = 322023573024615200, which contains 22 as substring.

It is a congruent number.

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, 10031549 + ... + 10031588.

It is an arithmetic number, because the mean of its divisors is an integer number (70220983).

Almost surely, 2^401262740 is an apocalyptic number.

It is an amenable number.

401262740 is an abundant number, since it is smaller than the sum of its proper divisors (441389056).

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

401262740 is a wasteful number, since it uses less digits than its factorization.

401262740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20063146 (or 20063144 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 401262740 is about 20031.5436249931. The cubic root of 401262740 is about 737.5808142793.

The spelling of 401262740 in words is "four hundred one million, two hundred sixty-two thousand, seven hundred forty".