423215418 has 16 divisors (see below), whose sum is σ = 850818816. Its totient is φ = 140340480.

The previous prime is 423215411. The next prime is 423215447. The reversal of 423215418 is 814512324.

It is a super-2 number, since 2×423215418² = 358222580065829448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423215411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181578 + ... + 183893.

It is an arithmetic number, because the mean of its divisors is an integer number (53176176).

Almost surely, 2^423215418 is an apocalyptic number.

423215418 is an abundant number, since it is smaller than the sum of its proper divisors (427603398).

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

423215418 is a wasteful number, since it uses less digits than its factorization.

423215418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365669.

The product of its digits is 7680, while the sum is 30.

The square root of 423215418 is about 20572.2001254120. The cubic root of 423215418 is about 750.7934819968.

The spelling of 423215418 in words is "four hundred twenty-three million, two hundred fifteen thousand, four hundred eighteen".