402270026 has 4 divisors (see below), whose sum is σ = 603405042. Its totient is φ = 201135012.

The previous prime is 402270019. The next prime is 402270047. The reversal of 402270026 is 620072204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 324036001 + 78234025 = 18001^2 + 8845^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402269983 and 402270010.

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 as a sum of consecutive naturals, namely, 100567505 + ... + 100567508.

Almost surely, 2^402270026 is an apocalyptic number.

402270026 is a deficient number, since it is larger than the sum of its proper divisors (201135016).

402270026 is a wasteful number, since it uses less digits than its factorization.

402270026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201135015.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 402270026 is about 20056.6703617525. The cubic root of 402270026 is about 738.1974792406.

The spelling of 402270026 in words is "four hundred two million, two hundred seventy thousand, twenty-six".