149427780 has 192 divisors, whose sum is σ = 474163200. Its totient is φ = 34974720.

The previous prime is 149427763. The next prime is 149427787. The reversal of 149427780 is 87724941.

It is a happy number.

It is a super-2 number, since 2×149427780² = 44657322871456800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149427787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1074951 + ... + 1075089.

It is an arithmetic number, because the mean of its divisors is an integer number (2469600).

Almost surely, 2^149427780 is an apocalyptic number.

149427780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149427780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237081600).

149427780 is an abundant number, since it is smaller than the sum of its proper divisors (324735420).

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

149427780 is a wasteful number, since it uses less digits than its factorization.

149427780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 149427780 is about 12224.0656084627. The cubic root of 149427780 is about 530.6527853059.

It can be divided in two parts, 14942 and 7780, that added together give a palindrome (22722).

The spelling of 149427780 in words is "one hundred forty-nine million, four hundred twenty-seven thousand, seven hundred eighty".