402943248 has 100 divisors (see below), whose sum is σ = 1234904220. Its totient is φ = 126406656.

The previous prime is 402943223. The next prime is 402943253. The reversal of 402943248 is 842349204.

402943248 is a `hidden beast` number, since 40 + 294 + 324 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 366799104 + 36144144 = 19152^2 + 6012^2 .

It is a super-2 number, since 2×402943248² = 324726522217579008, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12888 + ... + 31176.

Almost surely, 2^402943248 is an apocalyptic number.

402943248 is a gapful number since it is divisible by the number (48) 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 402943248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617452110).

402943248 is an abundant number, since it is smaller than the sum of its proper divisors (831960972).

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

402943248 is a wasteful number, since it uses less digits than its factorization.

402943248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18326 (or 18311 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 402943248 is about 20073.4463408753. The cubic root of 402943248 is about 738.6090550250.

The spelling of 402943248 in words is "four hundred two million, nine hundred forty-three thousand, two hundred forty-eight".