90342402 has 16 divisors (see below), whose sum is σ = 180779040. Its totient is φ = 30098432.

The previous prime is 90342389. The next prime is 90342409. The reversal of 90342402 is 20424309.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90342409) 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, 17713 + ... + 22235.

It is an arithmetic number, because the mean of its divisors is an integer number (11298690).

Almost surely, 2^90342402 is an apocalyptic number.

90342402 is an abundant number, since it is smaller than the sum of its proper divisors (90436638).

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

90342402 is a wasteful number, since it uses less digits than its factorization.

90342402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 90342402 is about 9504.8620189880. The cubic root of 90342402 is about 448.7080672999.

The spelling of 90342402 in words is "ninety million, three hundred forty-two thousand, four hundred two".