402660026 has 8 divisors (see below), whose sum is σ = 605392704. Its totient is φ = 200862460.

The previous prime is 402660007. The next prime is 402660047. The reversal of 402660026 is 620066204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 402659977 and 402660004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232700 + ... + 234423.

It is an arithmetic number, because the mean of its divisors is an integer number (75674088).

Almost surely, 2^402660026 is an apocalyptic number.

402660026 is a deficient number, since it is larger than the sum of its proper divisors (202732678).

402660026 is a wasteful number, since it uses less digits than its factorization.

402660026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467556.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 402660026 is about 20066.3904576782. The cubic root of 402660026 is about 738.4359625229.

The spelling of 402660026 in words is "four hundred two million, six hundred sixty thousand, twenty-six".