2306999772 has 144 divisors (see below), whose sum is σ = 7590320640. Its totient is φ = 599205600.

The previous prime is 2306999771. The next prime is 2306999813. The reversal of 2306999772 is 2779996032.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2306999771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38397 + ... + 78027.

It is an arithmetic number, because the mean of its divisors is an integer number (52710560).

Almost surely, 2^2306999772 is an apocalyptic number.

2306999772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2306999772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3795160320).

2306999772 is an abundant number, since it is smaller than the sum of its proper divisors (5283320868).

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

2306999772 is a wasteful number, since it uses less digits than its factorization.

2306999772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39669 (or 39654 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 54.

The square root of 2306999772 is about 48031.2374606360. The cubic root of 2306999772 is about 1321.3438586599.

It can be divided in two parts, 230699 and 9772, that added together give a triangular number (240471 = T₆₉₃).

The spelling of 2306999772 in words is "two billion, three hundred six million, nine hundred ninety-nine thousand, seven hundred seventy-two".