19970532 has 72 divisors (see below), whose sum is σ = 53464320. Its totient is φ = 6272640.

The previous prime is 19970527. The next prime is 19970543. The reversal of 19970532 is 23507991.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73557 + ... + 73827.

It is an arithmetic number, because the mean of its divisors is an integer number (742560).

Almost surely, 2^19970532 is an apocalyptic number.

19970532 is a gapful number since it is divisible by the number (12) 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 19970532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26732160).

19970532 is an abundant number, since it is smaller than the sum of its proper divisors (33493788).

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

19970532 is a wasteful number, since it uses less digits than its factorization.

19970532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 19970532 is about 4468.8401179724. The cubic root of 19970532 is about 271.3083820336.

It can be divided in two parts, 19970 and 532, that added together give a palindrome (20502).

The spelling of 19970532 in words is "nineteen million, nine hundred seventy thousand, five hundred thirty-two".