102238992 has 120 divisors (see below), whose sum is σ = 303829760. Its totient is φ = 32037120.

The previous prime is 102238991. The next prime is 102239009. The reversal of 102238992 is 299832201.

It is a super-2 number, since 2×102238992² = 20905622970352128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (102238991) 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, 164859 + ... + 165477.

Almost surely, 2^102238992 is an apocalyptic number.

102238992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102238992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151914880).

102238992 is an abundant number, since it is smaller than the sum of its proper divisors (201590768).

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

102238992 is a wasteful number, since it uses less digits than its factorization.

102238992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 102238992 is about 10111.3298828591. The cubic root of 102238992 is about 467.5975062329.

The spelling of 102238992 in words is "one hundred two million, two hundred thirty-eight thousand, nine hundred ninety-two".