146720836 has 12 divisors (see below), whose sum is σ = 263701228. Its totient is φ = 71377632.

The previous prime is 146720813. The next prime is 146720839. The reversal of 146720836 is 638027641.

It can be written as a sum of positive squares in 2 ways, for example, as 89415936 + 57304900 = 9456^2 + 7570^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 146720795 and 146720804.

It is not an unprimeable number, because it can be changed into a prime (146720839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495531 + ... + 495826.

Almost surely, 2^146720836 is an apocalyptic number.

It is an amenable number.

146720836 is a deficient number, since it is larger than the sum of its proper divisors (116980392).

146720836 is a wasteful number, since it uses less digits than its factorization.

146720836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991398 (or 991396 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 146720836 is about 12112.8376526725. The cubic root of 146720836 is about 527.4289098061.

The spelling of 146720836 in words is "one hundred forty-six million, seven hundred twenty thousand, eight hundred thirty-six".