72026388 has 48 divisors (see below), whose sum is σ = 213413760. Its totient is φ = 20578752.

The previous prime is 72026387. The next prime is 72026389. The reversal of 72026388 is 88362027.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72026387) and next prime (72026389).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72026387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46881 + ... + 48392.

It is an arithmetic number, because the mean of its divisors is an integer number (4446120).

Almost surely, 2^72026388 is an apocalyptic number.

It is an amenable number.

72026388 is an abundant number, since it is smaller than the sum of its proper divisors (141387372).

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

72026388 is a wasteful number, since it uses less digits than its factorization.

72026388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95293 (or 95285 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 72026388 is about 8486.8361596062. The cubic root of 72026388 is about 416.0675817841.

The spelling of 72026388 in words is "seventy-two million, twenty-six thousand, three hundred eighty-eight".