369831780 has 72 divisors (see below), whose sum is σ = 1160523000. Its totient is φ = 95219712.

The previous prime is 369831779. The next prime is 369831817. The reversal of 369831780 is 87138963.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 88397604 + 281434176 = 9402^2 + 16776^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30205 + ... + 40644.

It is an arithmetic number, because the mean of its divisors is an integer number (16118375).

Almost surely, 2^369831780 is an apocalyptic number.

369831780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

369831780 is an abundant number, since it is smaller than the sum of its proper divisors (790691220).

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

369831780 is a wasteful number, since it uses less digits than its factorization.

369831780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70893 (or 70888 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 369831780 is about 19231.0108938662. The cubic root of 369831780 is about 717.7966204690.

The spelling of 369831780 in words is "three hundred sixty-nine million, eight hundred thirty-one thousand, seven hundred eighty".