1972220 has 24 divisors (see below), whose sum is σ = 4276608. Its totient is φ = 763200.

The previous prime is 1972207. The next prime is 1972231. The reversal of 1972220 is 222791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971 + ... + 2210.

It is an arithmetic number, because the mean of its divisors is an integer number (178192).

2^1972220 is an apocalyptic number.

1972220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1972220 is an abundant number, since it is smaller than the sum of its proper divisors (2304388).

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

1972220 is a wasteful number, since it uses less digits than its factorization.

1972220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221 (or 3219 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1972220 is about 1404.3575043414. The cubic root of 1972220 is about 125.4060396265.

The spelling of 1972220 in words is "one million, nine hundred seventy-two thousand, two hundred twenty".