1220370624 has 140 divisors (see below), whose sum is σ = 3946614408. Its totient is φ = 369792000.

The previous prime is 1220370611. The next prime is 1220370647. The reversal of 1220370624 is 4260730221.

1220370624 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 37 + 0 + 624 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 46324 + ... + 67724.

Almost surely, 2^1220370624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220370624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1973307204).

1220370624 is an abundant number, since it is smaller than the sum of its proper divisors (2726243784).

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

1220370624 is a wasteful number, since it uses less digits than its factorization.

1220370624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21436 (or 21417 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1220370624 is about 34933.8034573964. The cubic root of 1220370624 is about 1068.6379221344.

The spelling of 1220370624 in words is "one billion, two hundred twenty million, three hundred seventy thousand, six hundred twenty-four".