1072796220 has 72 divisors (see below), whose sum is σ = 3445578864. Its totient is φ = 269250048.

The previous prime is 1072796213. The next prime is 1072796251. The reversal of 1072796220 is 226972701.

1072796220 is a `hidden beast` number, since 1 + 0 + 7 + 27 + 9 + 622 + 0 = 666.

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

It is a congruent number.

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, 172234 + ... + 178353.

It is an arithmetic number, because the mean of its divisors is an integer number (47855262).

Almost surely, 2^1072796220 is an apocalyptic number.

1072796220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1072796220 is an abundant number, since it is smaller than the sum of its proper divisors (2372782644).

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

1072796220 is a wasteful number, since it uses less digits than its factorization.

1072796220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350619 (or 350614 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 1072796220 is about 32753.5680499087. The cubic root of 1072796220 is about 1023.6993122985.

The spelling of 1072796220 in words is "one billion, seventy-two million, seven hundred ninety-six thousand, two hundred twenty".