764234220 has 24 divisors (see below), whose sum is σ = 2139855984. Its totient is φ = 203795776.

The previous prime is 764234213. The next prime is 764234231. The reversal of 764234220 is 22432467.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6368559 + ... + 6368678.

It is an arithmetic number, because the mean of its divisors is an integer number (89160666).

Almost surely, 2^764234220 is an apocalyptic number.

It is an amenable number.

764234220 is an abundant number, since it is smaller than the sum of its proper divisors (1375621764).

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

764234220 is a wasteful number, since it uses less digits than its factorization.

764234220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12737249 (or 12737247 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 764234220 is about 27644.7864885949. The cubic root of 764234220 is about 914.2721555141.

Adding to 764234220 its reverse (22432467), we get a palindrome (786666687).

The spelling of 764234220 in words is "seven hundred sixty-four million, two hundred thirty-four thousand, two hundred twenty".