402194238 has 32 divisors (see below), whose sum is σ = 844964352. Its totient is φ = 127380000.

The previous prime is 402194183. The next prime is 402194257. The reversal of 402194238 is 832491204.

It is a junction number, because it is equal to n+sod(n) for n = 402194199 and 402194208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11188 + ... + 30488.

It is an arithmetic number, because the mean of its divisors is an integer number (26405136).

Almost surely, 2^402194238 is an apocalyptic number.

402194238 is an abundant number, since it is smaller than the sum of its proper divisors (442770114).

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

402194238 is a wasteful number, since it uses less digits than its factorization.

402194238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19480.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 402194238 is about 20054.7809262530. The cubic root of 402194238 is about 738.1511173272.

The spelling of 402194238 in words is "four hundred two million, one hundred ninety-four thousand, two hundred thirty-eight".