74209902 has 32 divisors (see below), whose sum is σ = 162038688. Its totient is φ = 22519296.

The previous prime is 74209871. The next prime is 74209903. The reversal of 74209902 is 20990247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74209903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823 + ... + 12210.

It is an arithmetic number, because the mean of its divisors is an integer number (5063709).

Almost surely, 2^74209902 is an apocalyptic number.

74209902 is an abundant number, since it is smaller than the sum of its proper divisors (87828786).

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

74209902 is a wasteful number, since it uses less digits than its factorization.

74209902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13124.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 74209902 is about 8614.5169336417. The cubic root of 74209902 is about 420.2302252517.

The spelling of 74209902 in words is "seventy-four million, two hundred nine thousand, nine hundred two".