136720452 has 24 divisors (see below), whose sum is σ = 348016032. Its totient is φ = 41430400.

The previous prime is 136720411. The next prime is 136720469. The reversal of 136720452 is 254027631.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517749 + ... + 518012.

It is an arithmetic number, because the mean of its divisors is an integer number (14500668).

Almost surely, 2^136720452 is an apocalyptic number.

136720452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

136720452 is an abundant number, since it is smaller than the sum of its proper divisors (211295580).

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

136720452 is a wasteful number, since it uses less digits than its factorization.

136720452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035779 (or 1035777 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 136720452 is about 11692.7521140235. The cubic root of 136720452 is about 515.1628001975.

The spelling of 136720452 in words is "one hundred thirty-six million, seven hundred twenty thousand, four hundred fifty-two".