771048072 has 80 divisors (see below), whose sum is σ = 2190196800. Its totient is φ = 253380960.

The previous prime is 771048071. The next prime is 771048079. The reversal of 771048072 is 270840177.

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

It is not an unprimeable number, because it can be changed into a prime (771048071) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37629 + ... + 54387.

It is an arithmetic number, because the mean of its divisors is an integer number (27377460).

Almost surely, 2^771048072 is an apocalyptic number.

771048072 is a gapful number since it is divisible by the number (72) 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 771048072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1095098400).

771048072 is an abundant number, since it is smaller than the sum of its proper divisors (1419148728).

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

771048072 is a wasteful number, since it uses less digits than its factorization.

771048072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16848 (or 16835 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 771048072 is about 27767.7523757325. The cubic root of 771048072 is about 916.9813126502.

The spelling of 771048072 in words is "seven hundred seventy-one million, forty-eight thousand, seventy-two".