102712890 has 32 divisors (see below), whose sum is σ = 281727360. Its totient is φ = 23477184.

The previous prime is 102712829. The next prime is 102712919. The reversal of 102712890 is 98217201.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244345 + ... + 244764.

It is an arithmetic number, because the mean of its divisors is an integer number (8803980).

Almost surely, 2^102712890 is an apocalyptic number.

102712890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102712890 is an abundant number, since it is smaller than the sum of its proper divisors (179014470).

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

102712890 is a wasteful number, since it uses less digits than its factorization.

102712890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489126.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 102712890 is about 10134.7367997398. The cubic root of 102712890 is about 468.3188618885.

The spelling of 102712890 in words is "one hundred two million, seven hundred twelve thousand, eight hundred ninety".