402514020 has 36 divisors (see below), whose sum is σ = 1220959740. Its totient is φ = 107337024.

The previous prime is 402514019. The next prime is 402514067. The reversal of 402514020 is 20415204.

It can be written as a sum of positive squares in 2 ways, for example, as 251666496 + 150847524 = 15864^2 + 12282^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 402513984 and 402514002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1117915 + ... + 1118274.

Almost surely, 2^402514020 is an apocalyptic number.

It is an amenable number.

402514020 is an abundant number, since it is smaller than the sum of its proper divisors (818445720).

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

402514020 is a wasteful number, since it uses less digits than its factorization.

402514020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236204 (or 2236199 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 402514020 is about 20062.7520544914. The cubic root of 402514020 is about 738.3466985381.

Adding to 402514020 its reverse (20415204), we get a palindrome (422929224).

The spelling of 402514020 in words is "four hundred two million, five hundred fourteen thousand, twenty".