90070302 has 32 divisors (see below), whose sum is σ = 206272512. Its totient is φ = 25684704.

The previous prime is 90070291. The next prime is 90070303. The reversal of 90070302 is 20307009.

It is a super-2 number, since 2×90070302² = 16225318604742408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90070303) 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, 23728 + ... + 27260.

It is an arithmetic number, because the mean of its divisors is an integer number (6446016).

Almost surely, 2^90070302 is an apocalyptic number.

90070302 is an abundant number, since it is smaller than the sum of its proper divisors (116202210).

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

90070302 is a wasteful number, since it uses less digits than its factorization.

90070302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 90070302 is about 9490.5374979503. The cubic root of 90070302 is about 448.2571301074.

The spelling of 90070302 in words is "ninety million, seventy thousand, three hundred two".