147249690 has 64 divisors (see below), whose sum is σ = 416931840. Its totient is φ = 32569920.

The previous prime is 147249689. The next prime is 147249743. The reversal of 147249690 is 96942741.

It is a super-2 number, since 2×147249690² = 43364942410192200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4800 + ... + 17819.

It is an arithmetic number, because the mean of its divisors is an integer number (6514560).

Almost surely, 2^147249690 is an apocalyptic number.

147249690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

147249690 is an abundant number, since it is smaller than the sum of its proper divisors (269682150).

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

147249690 is a wasteful number, since it uses less digits than its factorization.

147249690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22667.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 147249690 is about 12134.6483261774. The cubic root of 147249690 is about 528.0618542665.

The spelling of 147249690 in words is "one hundred forty-seven million, two hundred forty-nine thousand, six hundred ninety".