101773990 has 24 divisors (see below), whose sum is σ = 184939632. Its totient is φ = 40325040.

The previous prime is 101773967. The next prime is 101773999. The reversal of 101773990 is 99377101.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101773999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160975 + ... + 161605.

It is an arithmetic number, because the mean of its divisors is an integer number (7705818).

Almost surely, 2^101773990 is an apocalyptic number.

101773990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101773990 is a deficient number, since it is larger than the sum of its proper divisors (83165642).

101773990 is an equidigital number, since it uses as much as digits as its factorization.

101773990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 101773990 is about 10088.3095709836. The cubic root of 101773990 is about 466.8875218785.

The spelling of 101773990 in words is "one hundred one million, seven hundred seventy-three thousand, nine hundred ninety".