402760780026 has 32 divisors (see below), whose sum is σ = 916957352448. Its totient is φ = 116742254640.

The previous prime is 402760780021. The next prime is 402760780031. The reversal of 402760780026 is 620087067204.

It is an interprime number because it is at equal distance from previous prime (402760780021) and next prime (402760780031).

It is a self number, because there is not a number n which added to its sum of digits gives 402760780026.

It is not an unprimeable number, because it can be changed into a prime (402760780021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132660136 + ... + 132663171.

It is an arithmetic number, because the mean of its divisors is an integer number (28654917264).

Almost surely, 2^402760780026 is an apocalyptic number.

402760780026 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

402760780026 is an abundant number, since it is smaller than the sum of its proper divisors (514196572422).

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

402760780026 is a wasteful number, since it uses less digits than its factorization.

402760780026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265323346.

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 402760780026 in words is "four hundred two billion, seven hundred sixty million, seven hundred eighty thousand, twenty-six".