149747040 has 72 divisors (see below), whose sum is σ = 511016688. Its totient is φ = 39932160.

The previous prime is 149747021. The next prime is 149747041. The reversal of 149747040 is 40747941.

149747040 is a `hidden beast` number, since 149 + 7 + 470 + 40 = 666.

149747040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 149746986 and 149747004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149747041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50556 + ... + 53435.

It is an arithmetic number, because the mean of its divisors is an integer number (7097454).

Almost surely, 2^149747040 is an apocalyptic number.

149747040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149747040 is an abundant number, since it is smaller than the sum of its proper divisors (361269648).

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

149747040 is a wasteful number, since it uses less digits than its factorization.

149747040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104012 (or 104001 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 149747040 is about 12237.1173076015. The cubic root of 149747040 is about 531.0304386352.

The spelling of 149747040 in words is "one hundred forty-nine million, seven hundred forty-seven thousand, forty".