1201576220 has 24 divisors (see below), whose sum is σ = 2717411424. Its totient is φ = 443658816.

The previous prime is 1201576193. The next prime is 1201576223. The reversal of 1201576220 is 226751021.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 1201576220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201576223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2310464 + ... + 2310983.

It is an arithmetic number, because the mean of its divisors is an integer number (113225476).

Almost surely, 2^1201576220 is an apocalyptic number.

1201576220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201576220 is an abundant number, since it is smaller than the sum of its proper divisors (1515835204).

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

1201576220 is a wasteful number, since it uses less digits than its factorization.

1201576220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4621469 (or 4621467 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1201576220 is about 34663.7594614318. The cubic root of 1201576220 is about 1063.1236388636.

The spelling of 1201576220 in words is "one billion, two hundred one million, five hundred seventy-six thousand, two hundred twenty".