101972280 has 64 divisors (see below), whose sum is σ = 306646560. Its totient is φ = 27127808.

The previous prime is 101972279. The next prime is 101972303. The reversal of 101972280 is 82279101.

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

It is a congruent number.

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, 70444 + ... + 71876.

Almost surely, 2^101972280 is an apocalyptic number.

101972280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101972280 is an abundant number, since it is smaller than the sum of its proper divisors (204674280).

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

101972280 is a wasteful number, since it uses less digits than its factorization.

101972280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040 (or 2036 counting only the distinct ones).

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

The square root of 101972280 is about 10098.1325006161. The cubic root of 101972280 is about 467.1905431993.

The spelling of 101972280 in words is "one hundred one million, nine hundred seventy-two thousand, two hundred eighty".