90457402 has 8 divisors (see below), whose sum is σ = 155069856. Its totient is φ = 38767452.

The previous prime is 90457399. The next prime is 90457403. The reversal of 90457402 is 20475409.

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

It is not an unprimeable number, because it can be changed into a prime (90457403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3230608 + ... + 3230635.

It is an arithmetic number, because the mean of its divisors is an integer number (19383732).

Almost surely, 2^90457402 is an apocalyptic number.

90457402 is a deficient number, since it is larger than the sum of its proper divisors (64612454).

90457402 is a wasteful number, since it uses less digits than its factorization.

90457402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461252.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 90457402 is about 9510.9096305243. The cubic root of 90457402 is about 448.8983786303.

The spelling of 90457402 in words is "ninety million, four hundred fifty-seven thousand, four hundred two".