151220040 has 32 divisors (see below), whose sum is σ = 453660480. Its totient is φ = 40325312.

The previous prime is 151220039. The next prime is 151220051. The reversal of 151220040 is 40022151.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 629964 + ... + 630203.

It is an arithmetic number, because the mean of its divisors is an integer number (14176890).

Almost surely, 2^151220040 is an apocalyptic number.

151220040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151220040 is an abundant number, since it is smaller than the sum of its proper divisors (302440440).

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

151220040 is a wasteful number, since it uses less digits than its factorization.

151220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260181 (or 1260177 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 151220040 is about 12297.1557687133. The cubic root of 151220040 is about 532.7659365087.

Adding to 151220040 its reverse (40022151), we get a palindrome (191242191).

The spelling of 151220040 in words is "one hundred fifty-one million, two hundred twenty thousand, forty".