87290450 has 24 divisors (see below), whose sum is σ = 174850788. Its totient is φ = 32230080.

The previous prime is 87290443. The next prime is 87290459. The reversal of 87290450 is 5409278.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 34916281 + 52374169 = 5909^2 + 7237^2 .

It is a super-2 number, since 2×87290450² = 15239245322405000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87290450.

It is not an unprimeable number, because it can be changed into a prime (87290459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66497 + ... + 67796.

Almost surely, 2^87290450 is an apocalyptic number.

87290450 is an abundant number, since it is smaller than the sum of its proper divisors (87560338).

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

87290450 is a wasteful number, since it uses less digits than its factorization.

87290450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134318 (or 134313 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 87290450 is about 9342.9358340941. The cubic root of 87290450 is about 443.5973170413.

The spelling of 87290450 in words is "eighty-seven million, two hundred ninety thousand, four hundred fifty".