102279970 has 24 divisors (see below), whose sum is σ = 198489564. Its totient is φ = 37722336.

The previous prime is 102279959. The next prime is 102279979. The reversal of 102279970 is 79972201.

It can be written as a sum of positive squares in 2 ways, for example, as 95199049 + 7080921 = 9757^2 + 2661^2 .

It is a super-2 number, since 2×102279970² = 20922384526401800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102279979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114867 + ... + 115753.

Almost surely, 2^102279970 is an apocalyptic number.

102279970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102279970 is a deficient number, since it is larger than the sum of its proper divisors (96209594).

102279970 is an frugal number, since it uses more digits than its factorization.

102279970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 102279970 is about 10113.3560206294. The cubic root of 102279970 is about 467.6599698482.

The spelling of 102279970 in words is "one hundred two million, two hundred seventy-nine thousand, nine hundred seventy".