771023228 has 18 divisors (see below), whose sum is σ = 1353803976. Its totient is φ = 384226128.

The previous prime is 771023207. The next prime is 771023233. The reversal of 771023228 is 822320177.

It is a junction number, because it is equal to n+sod(n) for n = 771023194 and 771023203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 629825 + ... + 631047.

It is an arithmetic number, because the mean of its divisors is an integer number (75211332).

Almost surely, 2^771023228 is an apocalyptic number.

It is an amenable number.

771023228 is a deficient number, since it is larger than the sum of its proper divisors (582780748).

771023228 is a wasteful number, since it uses less digits than its factorization.

771023228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 771023228 is about 27767.3050186726. The cubic root of 771023228 is about 916.9714638356.

The spelling of 771023228 in words is "seven hundred seventy-one million, twenty-three thousand, two hundred twenty-eight".