101653940 has 12 divisors (see below), whose sum is σ = 213473316. Its totient is φ = 40661568.

The previous prime is 101653927. The next prime is 101653987. The reversal of 101653940 is 49356101.

It can be written as a sum of positive squares in 2 ways, for example, as 40094224 + 61559716 = 6332^2 + 7846^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2541329 + ... + 2541368.

It is an arithmetic number, because the mean of its divisors is an integer number (17789443).

Almost surely, 2^101653940 is an apocalyptic number.

101653940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101653940 is an abundant number, since it is smaller than the sum of its proper divisors (111819376).

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

101653940 is a wasteful number, since it uses less digits than its factorization.

101653940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082706 (or 5082704 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 101653940 is about 10082.3578591518. The cubic root of 101653940 is about 466.7038734507.

The spelling of 101653940 in words is "one hundred one million, six hundred fifty-three thousand, nine hundred forty".