87421948 has 6 divisors (see below), whose sum is σ = 152988416. Its totient is φ = 43710972.

The previous prime is 87421937. The next prime is 87421981. The reversal of 87421948 is 84912478.

It is a super-2 number, since 2×87421948² = 15285193984229408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10927740 + ... + 10927747.

Almost surely, 2^87421948 is an apocalyptic number.

It is an amenable number.

87421948 is a deficient number, since it is larger than the sum of its proper divisors (65566468).

87421948 is a wasteful number, since it uses less digits than its factorization.

87421948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21855491 (or 21855489 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 87421948 is about 9349.9704812368. The cubic root of 87421948 is about 443.8199564906.

It can be divided in two parts, 874 and 21948, that added together give a palindrome (22822).

The spelling of 87421948 in words is "eighty-seven million, four hundred twenty-one thousand, nine hundred forty-eight".