1970388 has 54 divisors (see below), whose sum is σ = 5799066. Its totient is φ = 562464.

The previous prime is 1970369. The next prime is 1970401. The reversal of 1970388 is 8830791.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 777924 = 1092^2 + 882^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1206 + ... + 2322.

2^1970388 is an apocalyptic number.

1970388 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 1970388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2899533).

1970388 is an abundant number, since it is smaller than the sum of its proper divisors (3828678).

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

1970388 is a wasteful number, since it uses less digits than its factorization.

1970388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1970388 is about 1403.7050972337. The cubic root of 1970388 is about 125.3671976045.

It can be divided in two parts, 19703 and 88, that added together give a palindrome (19791).

The spelling of 1970388 in words is "one million, nine hundred seventy thousand, three hundred eighty-eight".