402560026 has 16 divisors (see below), whose sum is σ = 659417760. Its totient is φ = 182792080.

The previous prime is 402560021. The next prime is 402560057. The reversal of 402560026 is 620065204.

It is not an unprimeable number, because it can be changed into a prime (402560021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13440 + ... + 31396.

It is an arithmetic number, because the mean of its divisors is an integer number (41213610).

Almost surely, 2^402560026 is an apocalyptic number.

402560026 is a deficient number, since it is larger than the sum of its proper divisors (256857734).

402560026 is a wasteful number, since it uses less digits than its factorization.

402560026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18989.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 402560026 is about 20063.8985743050. The cubic root of 402560026 is about 738.3748276487.

The spelling of 402560026 in words is "four hundred two million, five hundred sixty thousand, twenty-six".