149393720 has 32 divisors (see below), whose sum is σ = 384156000. Its totient is φ = 51220608.

The previous prime is 149393711. The next prime is 149393729. The reversal of 149393720 is 27393941.

It is an interprime number because it is at equal distance from previous prime (149393711) and next prime (149393729).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149393729) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 266495 + ... + 267054.

It is an arithmetic number, because the mean of its divisors is an integer number (12004875).

Almost surely, 2^149393720 is an apocalyptic number.

149393720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149393720 is an abundant number, since it is smaller than the sum of its proper divisors (234762280).

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

149393720 is a wasteful number, since it uses less digits than its factorization.

149393720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533567 (or 533563 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 149393720 is about 12222.6723755486. The cubic root of 149393720 is about 530.6124639161.

The spelling of 149393720 in words is "one hundred forty-nine million, three hundred ninety-three thousand, seven hundred twenty".