402450290 has 16 divisors (see below), whose sum is σ = 790266240. Its totient is φ = 146345520.

The previous prime is 402450289. The next prime is 402450403. The reversal of 402450290 is 92054204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1829210 + ... + 1829429.

It is an arithmetic number, because the mean of its divisors is an integer number (49391640).

Almost surely, 2^402450290 is an apocalyptic number.

402450290 is a deficient number, since it is larger than the sum of its proper divisors (387815950).

402450290 is a wasteful number, since it uses less digits than its factorization.

402450290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658657.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 402450290 is about 20061.1637249687. The cubic root of 402450290 is about 738.3077290312.

The spelling of 402450290 in words is "four hundred two million, four hundred fifty thousand, two hundred ninety".