136745280 has 672 divisors, whose sum is σ = 625449600. Its totient is φ = 27869184.

The previous prime is 136745269. The next prime is 136745321. The reversal of 136745280 is 82547631.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7197111 + ... + 7197129.

Almost surely, 2^136745280 is an apocalyptic number.

136745280 is a gapful number since it is divisible by the number (10) 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 136745280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312724800).

136745280 is an abundant number, since it is smaller than the sum of its proper divisors (488704320).

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

136745280 is a wasteful number, since it uses less digits than its factorization.

136745280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 136745280 is about 11693.8137491581. The cubic root of 136745280 is about 515.1939822864.

The spelling of 136745280 in words is "one hundred thirty-six million, seven hundred forty-five thousand, two hundred eighty".