87670450 has 48 divisors (see below), whose sum is σ = 188184384. Its totient is φ = 29764800.

The previous prime is 87670447. The next prime is 87670459. The reversal of 87670450 is 5407678.

It is a happy number.

It is a super-2 number, since 2×87670450² = 15372215606405000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (87670459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36280 + ... + 38620.

It is an arithmetic number, because the mean of its divisors is an integer number (3920508).

Almost surely, 2^87670450 is an apocalyptic number.

87670450 is the 4682-nd decagonal number.

87670450 is an abundant number, since it is smaller than the sum of its proper divisors (100513934).

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

87670450 is a wasteful number, since it uses less digits than its factorization.

87670450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467 (or 2462 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 87670450 is about 9363.2499699624. The cubic root of 87670450 is about 444.2400867210.

The spelling of 87670450 in words is "eighty-seven million, six hundred seventy thousand, four hundred fifty".