146538690 has 32 divisors (see below), whose sum is σ = 352964736. Its totient is φ = 38935680.

The previous prime is 146538683. The next prime is 146538701. The reversal of 146538690 is 96835641.

It is a super-2 number, since 2×146538690² = 42947175333832200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262 + ... + 17121.

It is an arithmetic number, because the mean of its divisors is an integer number (11030148).

Almost surely, 2^146538690 is an apocalyptic number.

146538690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

146538690 is an abundant number, since it is smaller than the sum of its proper divisors (206426046).

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

146538690 is a wasteful number, since it uses less digits than its factorization.

146538690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17674.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 146538690 is about 12105.3166005685. The cubic root of 146538690 is about 527.2105612490.

The spelling of 146538690 in words is "one hundred forty-six million, five hundred thirty-eight thousand, six hundred ninety".