146739870 has 64 divisors (see below), whose sum is σ = 395254080. Its totient is φ = 38736000.

The previous prime is 146739841. The next prime is 146739883. The reversal of 146739870 is 78937641.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24580 + ... + 29960.

It is an arithmetic number, because the mean of its divisors is an integer number (6175845).

Almost surely, 2^146739870 is an apocalyptic number.

146739870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 146739870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197627040).

146739870 is an abundant number, since it is smaller than the sum of its proper divisors (248514210).

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

146739870 is a wasteful number, since it uses less digits than its factorization.

146739870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5498 (or 5492 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 146739870 is about 12113.6233225241. The cubic root of 146739870 is about 527.4517164913.

The spelling of 146739870 in words is "one hundred forty-six million, seven hundred thirty-nine thousand, eight hundred seventy".