72020502 has 40 divisors (see below), whose sum is σ = 166596672. Its totient is φ = 23230800.

The previous prime is 72020479. The next prime is 72020503. The reversal of 72020502 is 20502027.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72020503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2149 + ... + 12192.

Almost surely, 2^72020502 is an apocalyptic number.

72020502 is an abundant number, since it is smaller than the sum of its proper divisors (94576170).

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

72020502 is a wasteful number, since it uses less digits than its factorization.

72020502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14386 (or 14377 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 72020502 is about 8486.4893801854. The cubic root of 72020502 is about 416.0562477876.

Adding to 72020502 its reverse (20502027), we get a palindrome (92522529).

The spelling of 72020502 in words is "seventy-two million, twenty thousand, five hundred two".