90173402 has 8 divisors (see below), whose sum is σ = 147556512. Its totient is φ = 40987900.

The previous prime is 90173399. The next prime is 90173437. The reversal of 90173402 is 20437109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049374 + ... + 2049417.

It is an arithmetic number, because the mean of its divisors is an integer number (18444564).

Almost surely, 2^90173402 is an apocalyptic number.

90173402 is a deficient number, since it is larger than the sum of its proper divisors (57383110).

90173402 is a wasteful number, since it uses less digits than its factorization.

90173402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098804.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 90173402 is about 9495.9676705431. The cubic root of 90173402 is about 448.4280991048.

The spelling of 90173402 in words is "ninety million, one hundred seventy-three thousand, four hundred two".