149722990 has 32 divisors (see below), whose sum is σ = 277364736. Its totient is φ = 58158240.

The previous prime is 149722987. The next prime is 149722997. The reversal of 149722990 is 99227941.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149722997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81219 + ... + 83041.

It is an arithmetic number, because the mean of its divisors is an integer number (8667648).

Almost surely, 2^149722990 is an apocalyptic number.

149722990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149722990 is a deficient number, since it is larger than the sum of its proper divisors (127641746).

149722990 is a wasteful number, since it uses less digits than its factorization.

149722990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 149722990 is about 12236.1346020710. The cubic root of 149722990 is about 531.0020085444.

The spelling of 149722990 in words is "one hundred forty-nine million, seven hundred twenty-two thousand, nine hundred ninety".