1372220928 has 120 divisors (see below), whose sum is σ = 4265148888. Its totient is φ = 422203392.

The previous prime is 1372220897. The next prime is 1372220951. The reversal of 1372220928 is 8290222731.

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

It is a junction number, because it is equal to n+sod(n) for n = 1372220892 and 1372220901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48451 + ... + 71357.

Almost surely, 2^1372220928 is an apocalyptic number.

1372220928 is a gapful number since it is divisible by the number (18) 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 1372220928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2132574444).

1372220928 is an abundant number, since it is smaller than the sum of its proper divisors (2892927960).

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

1372220928 is a wasteful number, since it uses less digits than its factorization.

1372220928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22944 (or 22925 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1372220928 is about 37043.5004825408. The cubic root of 1372220928 is about 1111.2403762616.

The spelling of 1372220928 in words is "one billion, three hundred seventy-two million, two hundred twenty thousand, nine hundred twenty-eight".