149961772 has 24 divisors (see below), whose sum is σ = 269470656. Its totient is φ = 72987648.

The previous prime is 149961767. The next prime is 149961781. The reversal of 149961772 is 277169941.

It is a super-2 number, since 2×149961772² = 44977066122759968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34218 + ... + 38350.

It is an arithmetic number, because the mean of its divisors is an integer number (11227944).

Almost surely, 2^149961772 is an apocalyptic number.

It is an amenable number.

149961772 is a deficient number, since it is larger than the sum of its proper divisors (119508884).

149961772 is a wasteful number, since it uses less digits than its factorization.

149961772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377 (or 4375 counting only the distinct ones).

The product of its digits is 190512, while the sum is 46.

The square root of 149961772 is about 12245.8879629041. The cubic root of 149961772 is about 531.2841437432.

The spelling of 149961772 in words is "one hundred forty-nine million, nine hundred sixty-one thousand, seven hundred seventy-two".