10299780 has 36 divisors (see below), whose sum is σ = 31243212. Its totient is φ = 2746560.

The previous prime is 10299763. The next prime is 10299799. The reversal of 10299780 is 8799201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7884864 + 2414916 = 2808^2 + 1554^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28431 + ... + 28790.

It is an arithmetic number, because the mean of its divisors is an integer number (867867).

Almost surely, 2^10299780 is an apocalyptic number.

10299780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10299780 is an abundant number, since it is smaller than the sum of its proper divisors (20943432).

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

10299780 is a wasteful number, since it uses less digits than its factorization.

10299780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57236 (or 57231 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 10299780 is about 3209.3270322608. The cubic root of 10299780 is about 217.5751622908.

The spelling of 10299780 in words is "ten million, two hundred ninety-nine thousand, seven hundred eighty".