90820802 has 4 divisors (see below), whose sum is σ = 136231206. Its totient is φ = 45410400.

The previous prime is 90820801. The next prime is 90820811. The reversal of 90820802 is 20802809.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48427681 + 42393121 = 6959^2 + 6511^2 .

It is not an unprimeable number, because it can be changed into a prime (90820801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22705199 + ... + 22705202.

Almost surely, 2^90820802 is an apocalyptic number.

90820802 is a deficient number, since it is larger than the sum of its proper divisors (45410404).

90820802 is a wasteful number, since it uses less digits than its factorization.

90820802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45410403.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 90820802 is about 9529.9948583407. The cubic root of 90820802 is about 449.4987043202.

The spelling of 90820802 in words is "ninety million, eight hundred twenty thousand, eight hundred two".