1972040 has 32 divisors (see below), whose sum is σ = 5071680. Its totient is φ = 676032.

The previous prime is 1972037. The next prime is 1972049. The reversal of 1972040 is 402791.

It is a junction number, because it is equal to n+sod(n) for n = 1971997 and 1972015.

It is not an unprimeable number, because it can be changed into a prime (1972049) 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, 3242 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (158490).

2^1972040 is an apocalyptic number.

1972040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1972040 is an abundant number, since it is smaller than the sum of its proper divisors (3099640).

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

1972040 is a wasteful number, since it uses less digits than its factorization.

1972040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7061 (or 7057 counting only the distinct ones).

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

The square root of 1972040 is about 1404.2934166334. The cubic root of 1972040 is about 125.4022243364.

The spelling of 1972040 in words is "one million, nine hundred seventy-two thousand, forty".