427323690 has 36 divisors (see below), whose sum is σ = 1111551714. Its totient is φ = 113900688.

The previous prime is 427323649. The next prime is 427323697. The reversal of 427323690 is 96323724.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 384591321 + 42732369 = 19611^2 + 6537^2 .

It is a super-2 number, since 2×427323690² = 365211072070432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (427323697) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 195021 + ... + 197199.

Almost surely, 2^427323690 is an apocalyptic number.

427323690 is an abundant number, since it is smaller than the sum of its proper divisors (684228024).

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

427323690 is an equidigital number, since it uses as much as digits as its factorization.

427323690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 427323690 is about 20671.8090645207. The cubic root of 427323690 is about 753.2150515645.

The spelling of 427323690 in words is "four hundred twenty-seven million, three hundred twenty-three thousand, six hundred ninety".