19973480 has 32 divisors (see below), whose sum is σ = 45125640. Its totient is φ = 7956480.

The previous prime is 19973479. The next prime is 19973483. The reversal of 19973480 is 8437991.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17355556 + 2617924 = 4166^2 + 1618^2 .

It is not an unprimeable number, because it can be changed into a prime (19973483) 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, 10352 + ... + 12128.

Almost surely, 2^19973480 is an apocalyptic number.

19973480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19973480 is an abundant number, since it is smaller than the sum of its proper divisors (25152160).

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

19973480 is a wasteful number, since it uses less digits than its factorization.

19973480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069 (or 2065 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 19973480 is about 4469.1699453030. The cubic root of 19973480 is about 271.3217313318.

The spelling of 19973480 in words is "nineteen million, nine hundred seventy-three thousand, four hundred eighty".