87013420 has 24 divisors (see below), whose sum is σ = 196784784. Its totient is φ = 32127936.

The previous prime is 87013349. The next prime is 87013453. The reversal of 87013420 is 2431078.

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, 167074 + ... + 167593.

It is an arithmetic number, because the mean of its divisors is an integer number (8199366).

Almost surely, 2^87013420 is an apocalyptic number.

It is an amenable number.

87013420 is an abundant number, since it is smaller than the sum of its proper divisors (109771364).

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

87013420 is a wasteful number, since it uses less digits than its factorization.

87013420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334689 (or 334687 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 87013420 is about 9328.0984128599. The cubic root of 87013420 is about 443.1275443923.

Adding to 87013420 its reverse (2431078), we get a palindrome (89444498).

It can be divided in two parts, 8701 and 3420, that added together give a palindrome (12121).

The spelling of 87013420 in words is "eighty-seven million, thirteen thousand, four hundred twenty".