87842292 has 72 divisors (see below), whose sum is σ = 217528416. Its totient is φ = 27566784.

The previous prime is 87842291. The next prime is 87842297. The reversal of 87842292 is 29224878.

Its product of digits (129024) is a multiple of the sum of its prime divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87842291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 820903 + ... + 821009.

It is an arithmetic number, because the mean of its divisors is an integer number (3021228).

Almost surely, 2^87842292 is an apocalyptic number.

It is an amenable number.

87842292 is an abundant number, since it is smaller than the sum of its proper divisors (129686124).

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

87842292 is a wasteful number, since it uses less digits than its factorization.

87842292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 192 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 87842292 is about 9372.4218855107. The cubic root of 87842292 is about 444.5301475189.

The spelling of 87842292 in words is "eighty-seven million, eight hundred forty-two thousand, two hundred ninety-two".