451235040 has 48 divisors (see below), whose sum is σ = 1421391888. Its totient is φ = 120329216.

The previous prime is 451235011. The next prime is 451235051. The reversal of 451235040 is 40532154.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×451235040² = 407226122647603200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 451235040.

It is a congruent number.

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, 469557 + ... + 470516.

It is an arithmetic number, because the mean of its divisors is an integer number (29612331).

Almost surely, 2^451235040 is an apocalyptic number.

451235040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451235040 is an abundant number, since it is smaller than the sum of its proper divisors (970156848).

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

451235040 is a wasteful number, since it uses less digits than its factorization.

451235040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940091 (or 940083 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 451235040 is about 21242.2936614670. The cubic root of 451235040 is about 767.0098459413.

Adding to 451235040 its reverse (40532154), we get a palindrome (491767194).

The spelling of 451235040 in words is "four hundred fifty-one million, two hundred thirty-five thousand, forty".