87433140 has 24 divisors (see below), whose sum is σ = 244812960. Its totient is φ = 23315488.

The previous prime is 87433139. The next prime is 87433153. The reversal of 87433140 is 4133478.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 87433098 and 87433107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728550 + ... + 728669.

It is an arithmetic number, because the mean of its divisors is an integer number (10200540).

Almost surely, 2^87433140 is an apocalyptic number.

It is an amenable number.

87433140 is an abundant number, since it is smaller than the sum of its proper divisors (157379820).

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

87433140 is a wasteful number, since it uses less digits than its factorization.

87433140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457231 (or 1457229 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 87433140 is about 9350.5689666458. The cubic root of 87433140 is about 443.8388953692.

The spelling of 87433140 in words is "eighty-seven million, four hundred thirty-three thousand, one hundred forty".