401783760 has 160 divisors (see below), whose sum is σ = 1581684480. Its totient is φ = 91832832.

The previous prime is 401783749. The next prime is 401783821. The reversal of 401783760 is 67387104.

It is a super-2 number, since 2×401783760² = 322860379599475200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1834 + ... + 28406.

It is an arithmetic number, because the mean of its divisors is an integer number (9885528).

Almost surely, 2^401783760 is an apocalyptic number.

401783760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401783760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790842240).

401783760 is an abundant number, since it is smaller than the sum of its proper divisors (1179900720).

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

401783760 is a wasteful number, since it uses less digits than its factorization.

401783760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26602 (or 26590 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 401783760 is about 20044.5443949220. The cubic root of 401783760 is about 737.8999137190.

The spelling of 401783760 in words is "four hundred one million, seven hundred eighty-three thousand, seven hundred sixty".