87423776 has 48 divisors (see below), whose sum is σ = 188606880. Its totient is φ = 39559680.

The previous prime is 87423757. The next prime is 87423793. The reversal of 87423776 is 67732478.

It is a super-2 number, since 2×87423776² = 15285833220196352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 107660 + ... + 108468.

It is an arithmetic number, because the mean of its divisors is an integer number (3929310).

Almost surely, 2^87423776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87423776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94303440).

87423776 is an abundant number, since it is smaller than the sum of its proper divisors (101183104).

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

87423776 is a wasteful number, since it uses less digits than its factorization.

87423776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1129 counting only the distinct ones).

The product of its digits is 395136, while the sum is 44.

The square root of 87423776 is about 9350.0682350451. The cubic root of 87423776 is about 443.8230499061.

The spelling of 87423776 in words is "eighty-seven million, four hundred twenty-three thousand, seven hundred seventy-six".