402499040 has 96 divisors (see below), whose sum is σ = 1033482240. Its totient is φ = 147571200.

The previous prime is 402499001. The next prime is 402499063. The reversal of 402499040 is 40994204.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 402498988 and 402499006.

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, 92105 + ... + 96375.

It is an arithmetic number, because the mean of its divisors is an integer number (10765440).

Almost surely, 2^402499040 is an apocalyptic number.

402499040 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 402499040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516741120).

402499040 is an abundant number, since it is smaller than the sum of its proper divisors (630983200).

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

402499040 is a wasteful number, since it uses less digits than its factorization.

402499040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336 (or 4328 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 402499040 is about 20062.3787223749. The cubic root of 402499040 is about 738.3375389642.

The spelling of 402499040 in words is "four hundred two million, four hundred ninety-nine thousand, forty".