18502242 has 16 divisors (see below), whose sum is σ = 40368672. Its totient is φ = 5606720.

The previous prime is 18502241. The next prime is 18502243. The reversal of 18502242 is 24220581.

It is an interprime number because it is at equal distance from previous prime (18502241) and next prime (18502243).

It is not an unprimeable number, because it can be changed into a prime (18502241) 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, 140103 + ... + 140234.

It is an arithmetic number, because the mean of its divisors is an integer number (2523042).

Almost surely, 2^18502242 is an apocalyptic number.

18502242 is an abundant number, since it is smaller than the sum of its proper divisors (21866430).

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

18502242 is a wasteful number, since it uses less digits than its factorization.

18502242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280353.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 18502242 is about 4301.4232528316. The cubic root of 18502242 is about 264.4893071865.

The spelling of 18502242 in words is "eighteen million, five hundred two thousand, two hundred forty-two".