87401898 has 24 divisors (see below), whose sum is σ = 192477636. Its totient is φ = 28656000.

The previous prime is 87401893. The next prime is 87401903. The reversal of 87401898 is 89810478.

It is an interprime number because it is at equal distance from previous prime (87401893) and next prime (87401903).

It can be written as a sum of positive squares in 2 ways, for example, as 51796809 + 35605089 = 7197^2 + 5967^2 .

It is not an unprimeable number, because it can be changed into a prime (87401893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38703 + ... + 40898.

Almost surely, 2^87401898 is an apocalyptic number.

87401898 is an abundant number, since it is smaller than the sum of its proper divisors (105075738).

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

87401898 is a wasteful number, since it uses less digits than its factorization.

87401898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79670 (or 79667 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 87401898 is about 9348.8982238550. The cubic root of 87401898 is about 443.7860242393.

The spelling of 87401898 in words is "eighty-seven million, four hundred one thousand, eight hundred ninety-eight".