151032440 has 32 divisors (see below), whose sum is σ = 365964480. Its totient is φ = 55765632.

The previous prime is 151032419. The next prime is 151032449. The reversal of 151032440 is 44230151.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151032449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144704 + ... + 145743.

It is an arithmetic number, because the mean of its divisors is an integer number (11436390).

Almost surely, 2^151032440 is an apocalyptic number.

151032440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151032440 is an abundant number, since it is smaller than the sum of its proper divisors (214932040).

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

151032440 is a wasteful number, since it uses less digits than its factorization.

151032440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290471 (or 290467 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 151032440 is about 12289.5256214388. The cubic root of 151032440 is about 532.5455330737.

Adding to 151032440 its reverse (44230151), we get a palindrome (195262591).

The spelling of 151032440 in words is "one hundred fifty-one million, thirty-two thousand, four hundred forty".